From Sydney to London, humid Rio to chilly New York, at least 683,000 hit the streets in 2,300 events across 175 countries at the weekend, co-organiser and campaign group Avaaz said, calling it the largest number of people to protest over climate change all at once. About 50,000 demonstrators gathered in London's Hyde Park alone, many donning animal costumes to resemble bumblebees, cows, polar bears and exotic fish, while others brandished placards bearing stark warnings. "This is the problem of our generation and the next," said 37-year-old Frenchwoman Katia Herault in London, who had only a Nemo costume protecting her from pouring rain and howling winds.
By Megan Rowling and Morag MacKinnon PARIS/PERTH, Australia (Reuters) - More than half a million people from Australia to Paraguay joined the biggest day of climate change activism in history on Sunday, telling world leaders gathering for a summit in Paris there is "No Planet B" in the fight against global warming. Among the high heels and sandals were a pair of plain black shoes sent by Pope Francis, who has been a vocal advocate for action to prevent dangerous climate change, and jogging shoes from U.N. Secretary-General Ban Ki-moon. About 10,000 people joined arms to form a human chain through Paris along the 3-km (2-mile) route of the banned march, organizers said.